<table border="1" cellspacing="0" cellpadding="8">
    <tr>
        <th>Issue</th>
        <td>
            <a href=https://github.com/llvm/llvm-project/issues/129448>129448</a>
        </td>
    </tr>

    <tr>
        <th>Summary</th>
        <td>
            [clangd] Show Value on hover for objects representable at constexpr
        </td>
    </tr>

    <tr>
      <th>Labels</th>
      <td>
            new issue
      </td>
    </tr>

    <tr>
      <th>Assignees</th>
      <td>
      </td>
    </tr>

    <tr>
      <th>Reporter</th>
      <td>
          torshepherd
      </td>
    </tr>
</table>

<pre>
    Currently, hovers on basic values like `const char*` display their constexpr value:


However, hovers on structs and other objects don't show a value:


They _could_ feasibly use one of three strategies for displaying a value:

1. Do the same thing that P2741R3 does; if the type has .data() and .size() methods, treat it as a way to display the values and use them to render characters in the hover.
2.  if the type has a constexpr ostream operator, constexpr formatter specialization, etc. use that.
3. __builtin_dump_struct or similar method of displaying the fields

I think #1 is the cleanest, and as more things become possible at constexpr this could be useful for debugging constexpr code more easily.
</pre>
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